If the cat has managed to squeeze somewhere to his head, then everything else will take the body

It's all about the structure skeleta



If you have a purring and meowing pet, you probably will not again amazed at his ability to penetrate into any slot, even the narrowest.

This unique opportunity gives cats their skeletons, or rather the so-called floating collarbone, that is not attached to the shoulder joint, such as a person.

Cats thin rudimentary clavicle quite freely attached muscles, so times are forelimb has no rigid connection with the rest of the musculoskeletal system, and associated with it a strong but flexible tendons.

This feature allows the body to pass a cat wherever placed her head and turns the clutches of "shock absorbers" effectively softens the blow when jumping or falling from a great height.

Incidentally, the "pervasive" abilities cats also provided a large, compared to the people, the number of vertebrae in the thoracic and lumbar spine. In humans, there are 12 thoracic vertebrae, and their cats, usually 13, the lumbar portion of the people consists of five segments, and representatives of the cat family can boast of seven lumbar vertebrae that gives them tremendous flexibility.

via factroom.ru